From 862b733dcbeabed8dd545e1c3b3e55bb4e4da52f Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Thu, 23 Apr 2015 19:51:51 +0200
Subject: kern: disable stack allocation counters by default

Disable the stack allocation counters by default.  Casual checking
revealed that the hits-to-miss ratio is excellent.

* kern/thread.c (stack_alloc_{hits,misses,max}): Move variables...
* kern/counters.c: ... here, and add the usual counter prefix.
* kern/counters.h: New declarations.
---
 kern/counters.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'kern/counters.c')

diff --git a/kern/counters.c b/kern/counters.c
index 74fd42d..0a0665b 100644
--- a/kern/counters.c
+++ b/kern/counters.c
@@ -46,6 +46,9 @@ mach_counter_t c_stacks_current = 0;
 mach_counter_t c_stacks_max = 0;
 mach_counter_t c_stacks_min = 0;
 mach_counter_t c_stacks_total = 0;
+mach_counter_t c_stack_alloc_hits = 0;
+mach_counter_t c_stack_alloc_misses = 0;
+mach_counter_t c_stack_alloc_max = 0;
 mach_counter_t c_clock_ticks = 0;
 mach_counter_t c_ipc_mqueue_send_block = 0;
 mach_counter_t c_ipc_mqueue_receive_block_user = 0;
-- 
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